CN105484946A - Blade, blade sawtooth tail edge and manufacturing method thereof - Google Patents
Blade, blade sawtooth tail edge and manufacturing method thereof Download PDFInfo
- Publication number
- CN105484946A CN105484946A CN201510818701.0A CN201510818701A CN105484946A CN 105484946 A CN105484946 A CN 105484946A CN 201510818701 A CN201510818701 A CN 201510818701A CN 105484946 A CN105484946 A CN 105484946A
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- CN
- China
- Prior art keywords
- sawtooth
- blade
- trailing edge
- sawtooth trailing
- manufacture method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 239000004744 fabric Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 27
- 239000011152 fibreglass Substances 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 13
- 238000005728 strengthening Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 11
- 239000003351 stiffener Substances 0.000 claims description 9
- 238000012805 post-processing Methods 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 8
- 239000003365 glass fiber Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a blade, a blade sawtooth tail edge and a manufacturing method thereof. The manufacturing method of the blade sawtooth tail edge comprises the following steps: a step of sawtooth tail edge: cutting a sawtooth tail edge on the substrate, wherein the sawtooth tail edge comprises sawteeth and an adhesion area fixedly connected with the bottom edges of the sawteeth; post-treatment: a chamfer is formed at the edge of the serration and/or the bonding region at the trailing edge of the serration. The chamfer angle is arranged on the sawteeth, so that the air flow can flow through the tail edge surface of the sawteeth of the blade more smoothly, the aerodynamic performance of the blade is improved, and the noise is reduced.
Description
Technical field
The present invention relates to field of wind power equipment, particularly relate to a kind of blade, blade sawtooth trailing edge and manufacture method thereof.
Background technique
Along with the fast development of wind-powered electricity generation industry, catch wind energy power in order to what increase wind field unit area, the single-machine capacity of wind power generating set is increasing, and the length of blade is also more and more longer, and radiated noise also increases thereupon.
There are some researches show, the main noise of wind power generating set derives from the aerodynamic noise of blade, namely due to incoming flow wind and blade interaction caused by noise, and levels of aerodynamic noise is similar to and is directly proportional with 5 powers of tip speed.Another noise source of wind-driven generator is mechanical noise, and as the noise of gear-box, generator etc., under prior art conditions, mechanical noise can be well controlled.
According to the difference of sound generating mechanism, the aerodynamic noise of blade can be divided into again turbulent boundary layer trailing edge noise, laminar boundary layer vortex shedding noise, be separated stall noise, blunt trailing edge noise and blade tip separated vorticcs noise.For large-scale wind driven generator, turbulent boundary layer trailing edge noise is Main Noise Sources, is also called for short trailing edge noise.NLR (KLM's space power laboratory) shows the noise experiment result of GE2.3MW wind energy conversion system, and wind-driven generator radiated noise maximum position is positioned at blade exhibition to 80% ~ 95%.And from local velocity triangle, the principal element affecting local speed is the rotating speed of wind wheel.
Along with China adds up the continuous increase of electric motor power, a domestic class, two class wind fields have been developed totally substantially, and three classes, four class wind field Cheng Liaoge manufacturers fall over each other the object (class, two classes, three classes and four class wind fields divide according to wind speed) competed.But three classes, four class wind fields are near resident living area, and the construction of wind field must consider the impact on surrounding resident life, and what wherein must consider is exactly noise pollution.
The major measure of the aerodynamic noise of existing reduction wind-driven generator has two large classes: reduce wind speed round.The former is for the wind-driven generator being in running state, effect clearly, but simultaneously on generating impact also very large.
Summary of the invention
Embodiments of the invention provide a kind of blade, blade sawtooth trailing edge and manufacture method thereof, with the problem that noise in the blade working process solving existing wind-driven generator is large.
For achieving the above object, embodiments of the invention provide a kind of blade sawtooth trailing edge manufacture method, the method comprises the steps: sawtooth trailing edge step: on substrate, cut out sawtooth trailing edge, the bonding region that sawtooth trailing edge comprises sawtooth and is fixedly connected with the base of sawtooth; Post-processing step: form chamfering at the sawtooth of sawtooth trailing edge and/or the edge of bonding region.
Further, blade sawtooth trailing edge manufacture method also comprised before sawtooth trailing edge step: Substrate manufacture step: lay fiberglass cloth on mould, and priming by vacuum forms glass epoxy as substrate.
Further, the substrate reinforced layer that comprises at least layer glass scrim cloth and be arranged at least between layer glass scrim cloth; Or substrate comprises at least layer glass scrim cloth.
Further, reinforced layer is stiffener, and the center line of stiffener is parallel with the perpendicular bisector of the tooth of corresponding sawtooth or overlap.
Further, reinforced layer is strengthening net, and strengthening net covers the fiberglass cloth being in the below of strengthening net.
Further, along the thickness direction of sawtooth trailing edge, the width of sawtooth increases gradually and forms chamfering, or the width of sawtooth to be reduced gradually to both sides by the centre of sawtooth thickness direction and forms chamfering.
Further, also comprise in post-processing step: on bonding region, offer groove.
Further, groove is between adjacent two teeth of sawtooth.
Further, also comprise in post-processing step: between adjacent two teeth of sawtooth, manufacture transition slot, transition slot is positioned at bonding region top.
According to a further aspect in the invention, provide a kind of blade sawtooth trailing edge, the bonding region comprising sawtooth and be fixedly connected with the base of sawtooth, the edge of sawtooth and/or bonding region has chamfering.
Further, between adjacent two teeth of sawtooth, there is transition slot.
Further, bonding region is provided with groove, groove is between adjacent two teeth of sawtooth.
Further, blade sawtooth trailing edge comprises fiberglass cloth and reinforced layer.
According to a further aspect in the invention, provide a kind of blade, comprise blade body, blade also comprises blade sawtooth trailing edge, and blade sawtooth trailing edge is fixedly installed on blade body, and blade sawtooth trailing edge is manufactured by above-mentioned blade sawtooth trailing edge manufacture method.
The blade sawtooth trailing edge of embodiments of the invention makes to improve while noise reduction the aeroperformance of blade by arranging chamfering, ensure the situation decline low noise of generated energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the blade sawtooth trailing edge of embodiments of the invention;
Fig. 2 is the enlarged view at the chamfering place of the jagged edges of the blade sawtooth trailing edge of embodiments of the invention;
Fig. 3 be the groove of the bonding region of the blade sawtooth trailing edge of embodiments of the invention overlook enlarged view;
Fig. 4 is that the master of the groove of the blade sawtooth trailing edge of embodiments of the invention looks enlarged view;
Fig. 5 is the cutaway view Amplified image with stiffener of the blade sawtooth trailing edge of embodiments of the invention;
Fig. 6 is the cutaway view Amplified image with strengthening net of the blade sawtooth trailing edge of embodiments of the invention.
Description of reference numerals:
1, sawtooth; 2, bonding region; 3, chamfering; 4, groove; 5, transition slot; 6 stiffeners; 7, strengthening net.
Embodiment
Below in conjunction with accompanying drawing, the blade of the embodiment of the present invention, blade sawtooth trailing edge and manufacture method thereof are described in detail.
As shown in Figure 1, the blade sawtooth trailing edge bonding region 2 that comprises sawtooth 1 and be fixedly connected with the base of sawtooth 1.Bonding region 2, for being connected with blade, makes blade sawtooth trailing edge reliably be fixed on blade.Sawtooth 1 can reduce the turbulent flow at blade trailing edge place, and then noise during reduction blade working.The chamfering 3 arranged at the edge of sawtooth 1 and/or bonding region 2 can make air flow through the surface of blade sawtooth trailing edge more smoothly, and then reduces noise and reduce sawtooth trailing edge and be bonded in impact on blade aerodynamic performance on blade.
In conjunction with shown in Figure 2, chamfering 3 is distributed in the edge of each tooth of sawtooth 1 and the edge of bonding region 2.Along the thickness direction of sawtooth trailing edge, the width of sawtooth 1 increases gradually and forms this chamfering 3, to make air-flow by more level and smooth during blade sawtooth trailing edge, reduces blade sawtooth trailing edge to the impact of blade aerodynamic performance.Certainly, in other embodiments, along the thickness direction of sawtooth trailing edge, the width of sawtooth 1 can be reduced gradually to both sides by the centre of sawtooth 1 thickness direction and form this chamfering 3.
As shown in Figures 3 and 4, bonding region 2 is provided with groove 4, makes blade sawtooth trailing edge can reduce the transmission of internal stress when expanding with heat and contract with cold by arranging this groove 4, the shape of available protecting blade sawtooth trailing edge, and then ensure the reliability of its noise reduction.
Preferably, groove 4 between adjacent two teeth of sawtooth 1, to make blade sawtooth trailing edge stress distribution everywhere even.
Between adjacent two teeth of sawtooth 1, there is transition slot 5.This transition slot 5 can be arc groove, to improve the between cog stressing conditions of sawtooth 1, and the stress of diffusing air current by producing between sawtooth during serrated surface simultaneously.This transition slot 5 can also be vee gutter or rectangle groove etc.
As shown in Figure 5 and Figure 6, preferably, in order to improve the structural strength of blade sawtooth trailing edge, improve its serviceability, reduce cost of production and replacement frequency, blade sawtooth trailing edge comprises fiberglass cloth and reinforced layer.This reinforced layer is macromolecular material, and it is for improving the structural strength of blade sawtooth trailing edge.Macromolecular material can be kevlar fiber or its manufactured good.This reinforced layer is for strengthening rigidity or the toughness of sawtooth trailing edge, and the selection of its material can be selected as required.
Certainly, in other embodiments, blade sawtooth trailing edge only can comprise fiberglass cloth.
As shown in Figure 5, reinforced layer can be stiffener 6, and it is rectangular strip, triangle bar or the trapezoidal bar etc. that have macromolecular material to make.The center line of this stiffener 6 should overlap with the perpendicular bisector of sawtooth 1 or parallel, to form good support to sawtooth.
As shown in Figure 6, reinforced layer can be strengthening net 7, and this strengthening net 7 covers on the fiberglass cloth that is positioned at below it, supports to be formed blade sawtooth trailing edge on the whole.Certainly, this strengthening net 7 only can cover the segment glass scrim cloth be positioned under it.
According to a further aspect in the invention, provide a kind of blade sawtooth trailing edge manufacture method, the method is for the manufacture of above-mentioned blade sawtooth trailing edge.In the present embodiment, blade sawtooth trailing edge is formed by glass epoxy cutting, and in other embodiments, the material of blade sawtooth trailing edge can be other materials, such as plastics or aluminum alloy etc.
In the present embodiment, the step of blade sawtooth trailing edge manufacture method is as follows:
Substrate manufacture step: lay fiberglass cloth on mould, and priming by vacuum forms glass epoxy as substrate.This substrate is used for machining blade sawtooth trailing edge.
Particularly, by 800g/m
2three axle cloth cutting growth 1m, the glass fibre cloth of width 300mm or more.The type of the size of this glass fibre cloth and the glass fiber cloth of use thereof can the size of blade sawtooth trailing edge as required be determined, is not limited to this.
Release cloth laid by mould, then on release cloth, is paved with surperficial felt.Afterwards, two pieces of glass fibre cloths are laid on surperficial felt by the direction that 0 ° of direction is identical, to form the layer glass scrim cloth number of plies of the fiberglass cloth (can more than two-layer).Then, fiberglass cloth repaves full surperficial felt, release cloth, isolating film, flow-guiding screen and airfelt etc.
In order to gain in strength, reinforced layer can be laid between layer glass scrim cloth.Such as: between layer glass scrim cloth, insert the stiffener 6 of multiple thin wall shape long strip macromolecular material with certain rigidity along 0 ° of direction or between layer glass scrim cloth, lay strengthening net 7 that is netted or pectination thin-walled macromolecular material, making it solidifying together with glass fiber cloth.
After laying completes, subsides vacuum rubber belt around fiberglass cloth, one end of fiberglass cloth is put a volute along flow-guiding screen and is done honeycomb duct, and the other end spreads onesize airfelt and does vacuum orifice.
Be paved with vacuum bag film in the top, and paste with surrounding vacuum rubber belt, realize sealing.
Vacuumize, and vacuum pressurize, require that pressurize 10 minutes pressure does not decline, to guarantee to meet perfusion requirement.If vacuum is difficult to keep, one deck vacuum bag film can be increased again in vacuum bag film.
Epoxy resin is mixed on request with curing agent, gets quantity of resin and pour into.
On mould, cover electric blanket after perfusion, be heating and curing.The demoulding after cooling to be solidified, and form substrate.
Sawtooth trailing edge step is carried out: on substrate, cut out sawtooth trailing edge, the bonding region 2 that sawtooth trailing edge comprises sawtooth 1 and is fixedly connected with the base of sawtooth 1 after the demoulding.
Concrete, setting-out on substrate, cuts out sawtooth 1 in order to follow-up according to setting-out.It should be noted that and ensure that sawtooth 1 direction is consistent with 0 ° of direction of glass fiber cloth.Then, sawtooth 1 is cut out.
After cutting out sawtooth 1, carry out post-processing step: form chamfering 3 at the sawtooth 1 of sawtooth trailing edge and/or the edge of bonding region 2.
Particularly, in the edge of sawtooth 1 and bonding region 2 polishing chamfering 3, this chamfering 3 is 10mm in the length of the projection in width of blade direction.
After chamfering 3 completes, between adjacent two teeth of sawtooth 1, carry out fillet polishing and form transition slot 5.Bonding region 2 arranges groove 4, and this groove 4 is between two teeth of sawtooth 1, and the groove width of groove 4 is 2mm to 3mm, groove depth 1mm.
Then grinding process is carried out in serrated surface.Bonding region 2 gummed paper tapes or other are easily taken off tape-stripping protection, prevents subsequent treatment from polluting bonding plane.
Pin hole putty is used to carry out surface treatment, to seal tiny hole.
Use paint spraying blade sawtooth trailing edge surface.
According to a further aspect in the invention, provide a kind of blade, it comprises blade body, and described blade also comprises blade sawtooth trailing edge, and described blade sawtooth trailing edge is fixedly installed on described blade body, for reducing the noise in blade working.This blade sawtooth trailing edge is manufactured by above-mentioned blade sawtooth trailing edge manufacture method.During installation, this blade sawtooth trailing edge is connected with blade body by bonding region 2.
Blade of the present invention, blade sawtooth trailing edge and manufacture method thereof have following effect:
By arrange groove can reduce serrated surface expand with heat and contract with cold produce internal stress.
The bonding impact on blade aerodynamic efficiency of sawtooth can be reduced by arranging chamfering and strengthen the effect that sawtooth trailing edge reduces noise.
Rigidity or the toughness of sawtooth trailing edge can be strengthened by arranging reinforced layer.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (14)
1. a blade sawtooth trailing edge manufacture method, is characterized in that, comprise the steps:
Sawtooth trailing edge step: cut out sawtooth trailing edge on substrate, the bonding region (2) that described sawtooth trailing edge comprises sawtooth (1) and is fixedly connected with the base of described sawtooth (1);
Post-processing step: form chamfering (3) at the described sawtooth (1) of described sawtooth trailing edge and/or the edge of described bonding region (2).
2. blade sawtooth trailing edge manufacture method according to claim 1, is characterized in that, described blade sawtooth trailing edge manufacture method also comprised before described sawtooth trailing edge step:
Substrate manufacture step: lay fiberglass cloth on mould, and priming by vacuum forms glass epoxy as described substrate.
3. blade sawtooth trailing edge manufacture method according to claim 1 and 2, is characterized in that, described substrate comprises at least two-layer described fiberglass cloth and reinforced layer described in being arranged at least between layer glass scrim cloth; Or described substrate comprises at least two-layer described fiberglass cloth.
4. blade sawtooth trailing edge manufacture method according to claim 3, it is characterized in that, described reinforced layer is stiffener (6), and the center line of described stiffener (6) is parallel with the perpendicular bisector of the tooth of corresponding described sawtooth (1) or overlap.
5. blade sawtooth trailing edge manufacture method according to claim 3, it is characterized in that, described reinforced layer is strengthening net (7), and described strengthening net (7) covers the described fiberglass cloth being in the below of described strengthening net (7).
6. blade sawtooth trailing edge manufacture method according to claim 1, it is characterized in that, along the thickness direction of described sawtooth trailing edge, the width of described sawtooth (1) increases gradually and forms described chamfering (3), or the width of described sawtooth (1) to be reduced gradually to both sides by the centre of described sawtooth (1) thickness direction and forms described chamfering (3).
7. blade sawtooth trailing edge manufacture method according to claim 1, is characterized in that, also comprise in the rear in treatment step: on described bonding region (2), offer groove (4).
8. blade sawtooth trailing edge manufacture method according to claim 7, is characterized in that, described groove (4) is positioned between adjacent two teeth of described sawtooth (1).
9. blade sawtooth trailing edge manufacture method according to claim 1, it is characterized in that, also comprise in treatment step in the rear: between adjacent two teeth of described sawtooth (1), manufacture transition slot (5), described transition slot (5) is positioned at described bonding region (2) top.
10. a blade sawtooth trailing edge, it is characterized in that, the bonding region (2) comprising sawtooth (1) and be fixedly connected with the base of described sawtooth (1), the edge of described sawtooth (1) and/or described bonding region (2) has chamfering (3).
11. blade sawtooth trailing edges according to claim 10, is characterized in that, have transition slot (5) between adjacent two teeth of described sawtooth (1).
12. blade sawtooth trailing edges according to claim 10, is characterized in that, described bonding region (2) is provided with groove (4), and described groove (4) is positioned between adjacent two teeth of described sawtooth (1).
13. blade sawtooth trailing edges according to claim 10, is characterized in that, described blade sawtooth trailing edge comprises fiberglass cloth and reinforced layer.
14. 1 kinds of blades, comprise blade body, it is characterized in that, described blade also comprises blade sawtooth trailing edge, described blade sawtooth trailing edge is fixedly installed on described blade body, and described blade sawtooth trailing edge is manufactured by the blade sawtooth trailing edge manufacture method according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818701.0A CN105484946A (en) | 2015-11-23 | 2015-11-23 | Blade, blade sawtooth tail edge and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818701.0A CN105484946A (en) | 2015-11-23 | 2015-11-23 | Blade, blade sawtooth tail edge and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105484946A true CN105484946A (en) | 2016-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510818701.0A Pending CN105484946A (en) | 2015-11-23 | 2015-11-23 | Blade, blade sawtooth tail edge and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105484946A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994227A (en) * | 2018-09-11 | 2018-12-14 | 苏州迈道纳自动化科技有限公司 | Decorative pattern spline rolls seat |
| EP3540212A1 (en) * | 2018-03-16 | 2019-09-18 | Nordex Energy GmbH | Attachment for a wind energy assembly rotor blade |
| CN111237254A (en) * | 2018-11-29 | 2020-06-05 | 湖南科技大学 | Aviation compressor blade with noise reduction function under high Reynolds number condition |
| CN113090447A (en) * | 2021-05-26 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Blade power increasing system with thickened tail edge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5533865A (en) * | 1993-11-04 | 1996-07-09 | Stork Product Engineering B.V. | Wind turbine |
| CN102454540A (en) * | 2010-11-04 | 2012-05-16 | 通用电气公司 | Noise reducer for rotor blade in wind turbine |
| CN103061966A (en) * | 2011-10-19 | 2013-04-24 | 通用电气公司 | Wind turbine rotor blade with trailing edge extension and method of attachment |
| CN104736841A (en) * | 2012-09-24 | 2015-06-24 | 西门子公司 | A wind turbine blade with a noise reducing device |
-
2015
- 2015-11-23 CN CN201510818701.0A patent/CN105484946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5533865A (en) * | 1993-11-04 | 1996-07-09 | Stork Product Engineering B.V. | Wind turbine |
| CN102454540A (en) * | 2010-11-04 | 2012-05-16 | 通用电气公司 | Noise reducer for rotor blade in wind turbine |
| CN103061966A (en) * | 2011-10-19 | 2013-04-24 | 通用电气公司 | Wind turbine rotor blade with trailing edge extension and method of attachment |
| CN104736841A (en) * | 2012-09-24 | 2015-06-24 | 西门子公司 | A wind turbine blade with a noise reducing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3540212A1 (en) * | 2018-03-16 | 2019-09-18 | Nordex Energy GmbH | Attachment for a wind energy assembly rotor blade |
| CN108994227A (en) * | 2018-09-11 | 2018-12-14 | 苏州迈道纳自动化科技有限公司 | Decorative pattern spline rolls seat |
| CN111237254A (en) * | 2018-11-29 | 2020-06-05 | 湖南科技大学 | Aviation compressor blade with noise reduction function under high Reynolds number condition |
| CN113090447A (en) * | 2021-05-26 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Blade power increasing system with thickened tail edge |
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Application publication date: 20160413 |